OSCAR FABER last month became part of the Britain's second largest consultant when it agreed to a takeover by Maunsell's US parent Aecom.
Under the deal, Oscar Faber will be renamed Faber Maunsell and its chief executive Ken Dalton will become chief executive of Aecom's UK operation.
He will take over from current UK chief executive Peter Head who will move to the role of corporate development director.
The deal increases Aecom's multidisciplinary presence in the UK, adding to Maunsell's transportation based civils business, and the UK arm of Metcalf & Eddy, Aecom's global water and waste water business.
Oscar Faber's building engineering and transport planning business would complement Aecom's largely civils-based UK operation as well as giving it regional presence around Birmingham, Manchester, Edinburgh and in south west England, said Head.
Oscar Faber has doubled its turnover over the last six years - it was £43M last year - and had been looking to expand outside the UK.
Merging with Aecom gives Oscar Faber the chance to grow overseas while strengthening Aecom's UK presence.
The takeover is Aecom's second major British acquisition. Head said the group's next move was likely to be for a continental European consultant.
The US group's European presence is mainly restricted to work for the US military.
The deal consolidates Aecom's position as Britain's second largest employer of civil and structural engineers. It will have a combined UK engineering workforce of 3,653.The largest employer WS Atkins with 4,000 staff.
Aecom was the third biggest US consultant last year with total revenues of $1.5bn (£1.1bn).
Globally it employs 12,500 people in offices in the Unites States, Europe, the Middle East, Asia and Australia.